Akira 21WHS3-BN – 21 inch CRT TV – circuit diagram – UOC - TDA9381

Used ICs: 24C08 – NOM8370-B-16NB or TDA9381C38ND – AN7522N – STV9302A – KA5Q0765(STR)

SMPS [Split]

Sharp LC-32A28L– Sharp LC-42A48L – Service mode – adjustments – SMPS circuit diagram

How to enter service mode Sharp LC32A28L and Sharp LC42A48L LCD TVs – Alignment procedure – Power supply 715g 4009 and 715g 3905 - Schematic 

SERVICE MODE
To enter factory mode [Service mode] menu: press MENU + Numeric keys “1999” to enter factory mode.
To Exit, Power OFF.

Alignment method
Initial Set-up
1. Select source as “INPUT 2 ” (Component 1).
2. Set Smart Picture mode as “Standard”.
3. Apply “RGB Full white” pattern by signal generator or internal full white pattern.
4. Enter factory mode menu: press MENU + Numeric keys “1999”.
Alignment
1. At FAC mode menu, select ”19. Color temp” item and change to “Cool”
2. Apply RGB Full white pattern and change signal level to 204 (80% white pattern).
(2) If use internal pattern, set level to 818 (80% white pattern).
3. Adjust the 20. Scaler R GAIN, 22. Scaler B GAIN values to meet “Cool” color coordinates specification below. (Please keep 21. Scaler G GAIN at 0).
4. Apply RGB Full white pattern and change signal level to 48 (20% white pattern)
(4) If use internal pattern, set level to 204 (20% white pattern).
5. Adjust the 23. Scaler R Offset, 25.Scaler B Offset values to meet “Cool” color coordinates specification below. (Please keep 24.Scaler G Offset at 0)
6. Repeat step 2, 3, 4, 5, twice to meet “Cool” color coordinates specification below.
7. Select ”26. Clr temp Copy” item and perss RC “ X”. The Cool adjust value will copy to all of input source automatically.
8. Select ”19. Color temp” item and change to “Normal”.
9. Apply RGB Full white pattern and change signal level to 204 (80% white pattern).

(9) If use internal pattern, set level to 818 (80% white pattern).
10. Adjust the 20. Scaler R GAIN, 22. Scaler B GAIN values to meet “Normal” color coordinates specification below. (Please keep 21. Scaler G GAIN at 0).
11. Apply RGB Full white pattern and change signal level to 48 (20% white pattern).
(11) If use internal pattern, set level to 204 (20% white pattern).
12. Adjust the 23. Scaler R Offset, 25.Scaler B Offset values to meet “Normal” color coordinates specification below. (Please keep 24.Scaler G Offset at 0)
13. Repeat step 9, 10, 11, 12, twice to meet “Normal” color coordinates specification below.
14. Select ”26. Clr temp Copy” item and perss RC “ X”. The Normal adjust value will copy to all of input source automatically.
15. Select ”19. Color temp” item and change to “Warm”.
16. Apply RGB Full white pattern and change signal level to 204 (80% white pattern).
(16) If use internal pattern, set level to 818 (80% white pattern)

17. Adjust the 20. Scaler R GAIN, 22. Scaler B GAIN values to meet “Warm” color coordinates specification below. (Please keep 21. Scaler G GAIN at 0)

18. Apply RGB Full white pattern and change signal level to 48 (20% white pattern)

(18) If use internal pattern, set level to 204 (20% white pattern).

19. Adjust the 23. Scaler R Offset, 25.Scaler B Offset values to meet “Warm” color coordinates specification below. (Please keep 24.Scaler G Offset at 0)

20. Repeat step 16, 17, 18, 19, twice to meet “Warml” color coordinates specification below.

21. Select ”26. Clr temp Copy” item and perss RC “ X”. The warm adjust value will copy to all of input source automatically.

22. Select ”19. Color temp” item and change to “User”.

23. Copy “Normal” adjust value to 20. Scaler R GAIN, 22. Scaler B GAIN, 23. Scaler R Offset, 25.Scaler B Offset.

24. Select ”26. Clr temp Copy” item and press RC “ X”. The User adjust value will copy to all of input source automatically.

Tolerance ∆x, ∆y = +/- 0.005

Factory alignment tolerance at 80% white ∆x, ∆y = +/- 0.005 at 20% white ∆x, ∆y = +/- 0.009

Check the 16 grayscale pattern should be distinguished and color bar is correct

Reset AV setting in OSD menu, picture mode shall be recalled to be “Standard” mode.

1. Use Minolta CA-210 for color coordinates and luminance check.

2. Before adjusting,all colour analyzers (CA-210) should be coordinates with a same reference TV set.

3. Luminance > 400 cd/m2 in the center of the screen when Brightness control at 100; Contrast control at 100.

SMPS Schematic 715G4009 - Sharp LC-42A48L

SMPS Schematic 715G3905 - Sharp LC32A28L

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Panasonic TX-28LD2P – Circuit diagram (Schematic)

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